Middlings-purifier



(No Model.) 7 4 Sheets-Sheet 2.

A. WI-LLIAMS.-.

MIDDLINGS PURIFIER. N Patented Dec; 5, 1882.-

UNITED' STATES PATENT GFFICE.

ALBERT WILLIAMS, OF HANNIBAL, NEW YORK.

MIDDLINGS-PURIFIER.

SPECIFICATION forming part of Letters Patent No. 268,762, dated December 5, 1882,

' Applicationfiled March27,1882. (No model.)

To all whom it may concewu.

Be it known that I, ALBERT WILLIAMS, of Hannibal, in the county of Oswego and State of New York, have invented a new and useful Improvementin Middlings-Purifiers; and I do hereby declare that the followingis a full and exact description of the same, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

The invention hereinafter described and illustrated has reference to that class of machines known as middlings-pnrifiers.

. 1 will now proceed to give a full description of my apparatus, referring 'to each feature therein contained by means of letters marked on the accompanying sheets of drawings, said drawings forming a part of this specification, and representing, in-

Figure 1, a perspective view of the purifier; Fig. 2, a rear elevation of the same; Fig. 2, a longitudinal central vertical section on line as :20, Fig. 2; Fig. 2 a horizontal section on line y y, Fig. 3; Fig. 3, a view in detail of the distributing-table and, its attachments; Fig. 4:, a view in detail of a deflector used in my construction Fig. 5, a view in detail of the gates used; and Fig. 6, a view of one corner of the shaker-frame, showing the manner of connecting the end and side pieces of said frame.

Thesame letters refer to the same or correspondin g parts throughout the several views. In the drawings, A represents the shell of the machine, preferably rectangular, and composed of suitable frame work, and so constructed that by the removal of several screws any one of its sides can be taken off, and thus provide ready access to the interior when desired. The part A, which covers the rear end of the machine at the exit of waste, can be ad- 0 justed at any angle to suit the requirements .inalter referred to.

of themachine.

To the front end of the machine (see Fig. 1) are firmly secured the brackets or supports a a,'in which a shaft, B, has its bearings. This shaft, as shown, is provided at its center with a driving-wheel, b, and at each end with an ordinary fan-wheel, M, whose fans revolve in the fan-case O and convey air to the purifier through the medium of mechanism to be here- The shaft B is also provided at suitable points with the eccentrics b 11*. Around these rings are placed the eccentric-rods c cflwhich are connected at one end in any suitable manner to the set of perpendicular pitmen d d, the other end of said pitmen being firmly secured to a bar, 6, which is situated between two extending arms, 6 e, of a vibrating frame, on which is placed the screen, hereinafter described.

By use of the mechanism and construction thus far described it will be seen that upon the revolution of the shaft B motion is imparted to the distributing-table through the medium of theeccentrics b b and the pitman d (1. Through the lower ends of these pitmen is passed a rod which has secured to it two arms, which are pivoted at their other endsin slots made in the upper ends of another set of perpendicular pitmen, gg,this rod and the arms secured thereto not being shown in the drawin gs. These pitmen g g are connected at their other orlower endsto the transverse-rod 9 This rod is situated between arms h h ,which are secured on the under face of a vibrating bottom, hereinafter referred to. By this construction, upon the revolution of the shaft B motion is imparted through the medium of the two sets of perpendicular pitmen to the distributing-table and the bottom of the purifier simultaneously.

To the main frame and at the points shown in Fig. 1 are securely fastened the brackets it" and jj, which serve as bearings for the rods It and Z, respectively, and on these rods the two sets of pitmen d d and g ghave their centers or pivots.

The sides of the casing of the purifierare so constructed that they will project outwardly and form on each side thereof a longitudinal taperingtube, D. (Shown partly broken away in Fig. l of the drawings.) These tubes are smal1 est at the rear end of the purifier, and at their largest ends are so constructed as to form casin g Ofor the fans, which have their hearings on the shaft B. It is through these tubes D that air is conveyed from the fans to the transverse tubes ings, at points between the distributing-table and the bottom ofthe machine, and which open into the tubes D. The amount of air to be admitted into these tubes E, or into any one of 870., there being one gate for each tube, the

them, is regulated by a system of gates, F F,

E E, &c., which are sitnated,as shown in drawnumber oftnbes to be determined by the size of the machine upon which they are used. These tubes E are placed at suitable distances from each other to allow the middlings to pass between them in falling from the screen to the bottom of the machine. In Fig. l of the drawings I have shown three of these tubes. Over the open tops of two of said tubes, as shown, I have placed a piece of bolt-cloth, m, which is secured in any desirable manner to said tube. Over this bolt-cloth, as shown in the same figure, is placed the peculiarly-shaped deflector 1, preferably of metal, the construction of said deflector also being shown in Fig. 4.. As clearly shown in this latter figure, it is provided with sloping sides and on each of its ends with two downwardly-projecting arms, m m and m m, by means of which it is secured to the side frame-work of the purifier, and along its upper edge with a slot, n, through which the air forced into the tubes E escapes up to the screen. The object of providing these tubes E with these coverings is to prevent the middlings from falling on the bolt-cloth and preventing the air from escaping from the tubes.

The bottom of the machine is pivoted by means of the pitmen before described and two arms which are secured to said bottom and to the side of the purifier at points near its rear. Qnly one of these arms, which is marked 0, is shown in Fig. 1. This'bottom slopes toward one side of the machine sufficiently to allow the middlings to escape therefrom after being purified.

In Fig. 3 I have clearly and in detail shown the construction and arrangement of the shaker used in my construction. As shown in that figure, there is a rectangular frame, L, in which arecut the openings or recessespp, &c., for the purpose described hereinafter. This frame L is intended to fit closely within the casing of the machine, in' the sides of which casing there is a portion at 1* cut away to correspond with each of the recesses 19, above mentioned. This latter construction is clearly shown in Fig. 1. Within this frame L the screen-frame G, which is provided with the bolts 8 s s, &c., as shown, is placed, said bolts .3 passing through the recesses 19, made in the frame L, as described. These bolts 8 are prevented from leaving the screen-frame G by nuts 3, and have placed on their opposite ends the rubber bufferss which in their turn are held on the bolts by means of nuts 8'. This screen frame G is covered, as shown, with any suitable screen-cloth, 8 adapted to this purpose, said cloth being secured to the frame in any desirable manner. The frame L is pivoted in the machine by means of the pitmen d d, before referred to, and the arms 3 1 (Shown in Fig. 2.) These arms 3 y are secured at their upper ends to the rod a, secured to the frame L, and at their lower ends to any convenient portion of the casing. Any sagging or giving in the cloth is immediately taken up by theexpansion of the rubber buffers s, and by the arrangement of said buffers on each side of the frame, as shown, an equal strain is on the cloth from every side, and the size and shape of the meshes in said cloth maintained. Should the strain be from one side alone, the shape and size ofthe meshes would be changed, and all advantage derived from stretching the cloth would be lost.

At the rear end of the purifier, as shown in Fig. 2, reacting hammers H H are suspended in brackets H H by means of a rod, 11. These are situated as shown, and project a sufficient distance from the end of the casing to allow free and easy movement of the hammers in striking against the ends of the frame L. By the striking of these hammers against the frame L the concussion is received by the bolts 8, and by them imparted to the entire cloth, which aids greatly in clearing the meshes of said cloth.

In Fig. 3 is shown a feeding device, which is designated by the lettersI in the drawings. It is a V-shaped hopper, and is composed of two parts, I and l, and is secured to acrosspiece, a, secured to the frame L, as shown in Figs. 1 and 3. The part I forms the back, sides, and bottom of the hopper, and is itself V-shaped, with its bottom resting upon the cross-piece o, as before mentioned. The part 1 is perforated, as shown, with holes w w, and

fits closely into the part I, its lower edge resting upon the lower side thereof, and is also secured to the cross-piece o by means of wings u u by means of screws, which are passed through the holes shown in said wings. The part I is also fastened to the cross-piece t by means of screws passed through the bottom thereof, or it may be secured in any other desirable manner. the mouth of this hopper and by the motion of the vibrating frame L are sifted through the holes w, and then pass tothe distributing-cloth..

The operation of the machine is as follows, viz Themachine being setin motion by means of the necessary power applied to the shaft B. at b, the middlings to be purified are fed into the hopper I, and thence through the perforations to w to the screen 8 which is being vibrated by the pitmen d d, connected with the shaft B and operated by the eccentrics b b. The middlings as they enter upon the screen The middlings are fed into sift through quite rapidly, while the coarser partssuch as the bran and brown speckfiare prevented from going through the screen by the action of the wind, which is forced by the wind-fans through the longitudinal tubes D into the transverse tubes E, and thence up against the under surface of the screen. The gates F F, 860., regulate to a nicety the amount of wind thus brought to bear under the screen, and also the exact points of said screen against which the wind is to be directed. The coarser particlessu ch as the bran, &c.-Vare kept in continual agitation toward the tail end of the screen,and finally pass offoverthe end thereof, while the finer portions of the middlings pass through the screen into the bottom of the ma.-v

chine, which is being vibrated by the pitmen g g, from whence it escapes through the side thereof. The hammers H H act upon the screen-frame and greatly aid in clearing out the meshes of the screen-cloth by knocking and jarring said vibrating frame.

Having thus fully described the several parts of my invention, what I claim as new therein,

- and desire to secure by Letters Patent, is-- 1. In a machine for purifying middling s; the frames G and L, in combination with bolts 8 and rubber buffers s, the parts arranged and operated as shown, and for the purpose set.

forth.

2. In a machine for purifying middlings, the Is reacting hammers H, suspended as described and in combination-with the vibrating frame L, the parts arranged and operated as described.

3. In a machine for purifying middlings, the deflectors l and tubes E, in combination with 20 gates F, tapering tubes D, and 'fans M, substantially as described.

This specification signed and witnessed this 6th day of March, 1882. i

' f ALBERT WILLIAMS.

Witnesses BRADFORD F. BYRNE, GEORGE E. GREY. 

